Treating Open Wounds with ACV

We had a horse that got hooked in the shoulder by a bull. It was a deep puncture wound.

Washing it every day and applying the following healed it with no scarring.

Mix apple cider vinegar with black pepper to make a paste.
Apply to the wound and wrap if possible (not necessary).
Will heal quickly without scar tissue or proud flesh.

This also works for any cut or abrasion.